[Abdullah]

Thanks @Perry

[Abdullah]

@Belassi, @Perry thanks. 
Is the surfactant the only problem or there is anything else too? 

What is the problem with this surfactant? Is it harsh, iterating, not able to clean well or something else? 

Will changing the quantity do any benefit? 

We have 1 ton of it in stock, we purchased it thinking it is the mildest surfactant according to comparations in Internet and powerfull enough to be used as primary surfactant. 

[Abdullah]

Thank you all from your informative comments. 

Can i use Piroctone Olamine as only preservative in Shampoo with %15 active surfactant decyl glucoside? 
In attached photo you can see it has broad spectrum activity and MIC is %0.05 or less. 
At what percentage can i use it as only preservative for Shampoo?

[Abdullah]

Glyceryl caprylate, Ethylhexylglycerin, Piroctone Olamine, Caprylyl Glycol.
In surfactant system we have %15 active decyl glucoside and in emulsions SSL and GMS emulsifier. 
I want to be able to add these in water face pre emulsion. 

[Abdullah]

Thank you both. 
I am convinced not to go for hyaluronic acid.
Do you have any suggestion which one of these three humectants to use?

Sodium Lactate

Sodium PCA

Glycerine

[Abdullah]

Cst4Ms4Tmps4 said:

OMG! Tough one!

I say DMDM Hydantoin. But of course EWG says it is deadly. My only preservative is DMDM Hydantoin. I am too frightened to even try other eco, green, safe, organic, natural ones. I am waiting for my good self and others who use my DMDM Hydantoin-laden moisturiser die painfully!  >

pH between 4 and 5…This one is easy. You probably can use a mixture of Sodium Benzoate, Potassium Sorbate, Sodium Gluconate (or Glucono delta Lactone or Gluconic Acid). Add in Salicylic Acid if you feel adventurous.

Very natural. Very board spectrum. Very approved.

Erm…Sodium Benzoate and Potassium Sorbate as natural and as edible and as ubiquitous as they are, they have their own warnings and countless users’ complaints.

Even Glycerin/Glycerol whatever one believes, thinks, heard, seen ‘safe’ there is always warnings and complaints.

There is always somebody allergic to something. Likewise, there is always someone (politically correct crazy) sensitive about every single bloody dayum thang.

Sodium metal per se is lethal. Chlorine gas is deadly. Together they become Sodium Chloride, table salt, very safe to be touched and eaten. BUT….but it can be very bad if used concentrated. Glycerin is like that too. So does this mean EWG should also put table salt and Glycerin in the danger zone? I won’t be surprised if they already did!

Oh, Glycerin is also used as an anti-freeze! We’re gonna die! Table salt can be used as anti-freeze as well! Both of them are commonly used to reduce or totally eliminate crystallisation of sugar (in baking) and lower down freezing point. Hence, anti-freeze is born! We’re certainly gonna die!

Thanks dear. 
At what percentage should we use each of these preservatives and total preservative? 
In our lotion and cream with cetearyl glucoside (a nonionic surfactant) as main emulsifier the pH is 5-6. Would this be broad for it too? 
We have purchased 25kg caprylhydroxamic acid because of its low usage rate and high pH range thinking it is broad spectrum because Inolex company stated it in Propanediol as broad spectrum but it was weak for bacteria. So any advice for an antibacterial to use with it would be appreciated. 
We also try to use one preservative system with high pH range to be able to use it in all our products in pH range 4-7

[Abdullah]

Thanks ngarayeva001
Any suggestion on preservative then? 

[Abdullah]

Thanks MarkBroussard
pH is between 4-5. 
Caprylhydroxamic acid is for fungi, what anti bacterial to use with it to make it broad spectrum? 

[Abdullah]

Thanks ngarayeva001. Any preservative which is in ecocert standard or ewg rated 1 or 2?

[Abdullah]

I wanted to purchase Caprylhydroxamic acid, glyceryl caprylate, glycerin from http://www.makingcosmetics.com but they say it is not broad spectrum and preservation is ≤12 months.
Have you used this blend? 
Is it broad spectrum?
Can it preserve for more than a year? 
What is the effect on nonionic surfactant shampoo?